Calculate Radius Sheet Metal

Whereas the outer surface is stretched.

Calculate radius sheet metal.

A is the bending angle in the above equation so. To calculate r which is the radius of the arc on the neutral axis we can use the following equation. And by having t and the sheet thickness t we can calculate the k factor as follow. Choose a bend radius that matches your minimum bend.

Here again a minimum bend radius is not necessarily the same thing as a sharp bend. Sheet metal calculator bend allowance equations and calculator. Punch edge radius in. This change in sheet length depends on the position of neutral axis or k factor.

Most sheet metal materials will conform to the calculations. This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend. A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp. Input material thickness and and inner radius to get the data of k factor y factor neutral layer.

As a result overall sheet length increases. Cells on the right will output the desired values. Bend radii minimum bend sizes. You only have to insert interior angle flange lengths k factor inside radius and material thickness.

Best way to calculate k factor in sheet metal is by reverse engineering. With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements. Then input leg length a and b to get the flat size of the sheet. A cutout or the edge of your flange to your bend.

This page also includes a link to a on line sheet metal bend allowance calculator. Determine your minimum bend by measuring the distance from your closest feature i e. To calculate the neutral axis distance from the inner face t we can subtract inside bend radius from r. When sheet metal is bend the inside bending surface is compressed.

Die edge radius in.